<template>
  <div class="returnBook">
    <main-top-bar classify="图书归还"></main-top-bar>
    <div class="search">
      <el-input
        v-model="input"
        placeholder="请扫描条形码或输入图书编号"
        @keyup.native="checkEnter"
      ></el-input>
      <el-button type="primary" @click="returnClick">确认归还</el-button>
    </div>
    <div class="title">
      最近归还
      <span class="clear" @click="clearBooks"
        >清空<i class="el-icon-s-open"></i
      ></span>
    </div>
    <div class="bookBox">
      <book-exhibit :booksInfo="bookData" :showReturn="true"></book-exhibit>
    </div>
  </div>
</template>

<script>
import { Message } from "element-ui";
import MainTopBar from "../../components/common/mainTopBar.vue";
import bookExhibit from "../../components/content/bookExhibit.vue";
export default {
  data() {
    return {
      input: "",
      bookData: [],
      returnRes: true,
    };
  },
  components: {
    bookExhibit,
    MainTopBar,
  },
  methods: {
    // 还书函数
    returnResult() {
      this.$axios
        .get("/books/bookreturn", { params: { bookid: this.input } })
        .then((res) => {
          if (res &&(res.data.msg == "还书成功" ||res.data.msg == "还书成功，该书已逾期")
          ) {
            const books = res.data.data;
            res.data.msg == "还书成功" ? (books.returnRes = true) : (books.returnRes = false);
            books.returnRes ? Message.success(res.data.msg) : Message.warning(res.data.msg);
            this.bookData.unshift(books);
          }
        });
    },
    // 清除图书
    clearBooks() {
      this.bookData = [];
    },
    // 点击还书按钮
    returnClick() {
      this.returnResult();
      this.input = "";
    },
    // 检测回车按下
    checkEnter() {
      if (event.keyCode == 13) this.returnClick();
    },
  },
};
</script>

<style scoped>
.returnBook {
  width: 100%;
}
.search {
  width: 100%;
  display: flex;
}
.bookBox {
  height: calc(100vh - 300px);
  overflow: auto;
}
.title {
  box-sizing: content-box;
  position: relative;
  padding-left: 10px;
  height: 40px;
  background-color: #fff;
  margin-top: 20px;
  line-height: 40px;
  background-color: #67c23a;
}   
.clear {
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  cursor: pointer;
}
.el-icon-s-open {
  margin-left: 8px;
}
</style>